Pneumatic stripper for carding engines



Feb. 8 1

P. E. GREENHILL PNEUMATIC STRIPPER FORVCARDING ENGINES Filed May 2. 1925 PINK E. GREENHILL, 01? CHARLOTTE, NORTH CAROLINA, ASSIGNOR T0 ABINGTON- TEXTILE MACHINERY TRUSTEES, OF BOSTON, MASSACHUSETTS, A. TRUST OF MAS- SACHUSETTS.

PNEUMATIC STRIPPER FOR CABDING ENGINES.

Application filed May 2, 1925. Serial No. 27,352.

The invention has relation to the pneumat1c strlpper mechanisms which are. employed for removing accumulations of dirt,

short-fibers, etc., from among the teeth of' the card-clothing of the cylinders and other fiber-working elements of carding engines. I

mally having their open mouths disposed in I close proximity ,tothe card-clothed surfaces intended to be stripped.

The '1I1V6I1t1OIl consists in novel combinatlons in which a stripper-nozzle lsmounted in connection with the traversing carriage of a pneumatic stripper mechanism, with capacity to occupyeither its working position extending fromthe carriage to the cylinder' which is stripped, or a withdrawn or retracted idle position. Y

Anillustrat-ive embodiment of the invention is represented in the drawings, in which latter,-

Fig. 1 is a perspective view of certain portions ofa carding engme, and of a vacuum stripper mechanism arranged to cooperate withthe main Cylinder and doffer-cylinder .of the carding engine with the said illustrative embodiment of the invention incorporated in' connection with the cylindernozzles. 'The gear-box 6 is broken away partly in this view.

Fig. 2 1s a side elevation of the three-way piece or suction-box and doifer-nozzle, de-

tached, ona larger scale than Fig. 1. Fig. 3 is a plan view of the parts which are shown in Fig. 2.

Fig. 4 is a partly sectional plan view of certain details in connection with the cylinder-nozzle.

Portions of the mam cylinder and dof'fer" of a carding engine are indicated at 1 and 2, Fig. '1. At?) is indicated a portion of a door which forms a part of the cylinder casing, the said door being located in the angle between the cylinder and doifer, just above the dolfer. At 4 is indicated a portion of supporting frame-work at one end of the dofl'er, and at 5 a portion of the guard enclosing the dof'fer-gear (not shown). At 6 is a gearbox, resting upon the doffer-gear guard, and partiallyenclosing the spur-gears 7 and 8 by means of which. rotary motion is transmitted from the doffer-gear to the traversescrew not shown), enclosed within the stationary traverse-tube 9, and cooperating with the nozzle-carriage 10 to cause the said carriage to travel from one side of the carding engine to the other side thereof, so as to traverse the cylinder stripping nozzle 11 and dofl'er-stripping nozzle 12 along the peripheries of the cylinder anddofi'er, respectively,

from end to end of the cylinder and doffer.

At 13 is a so-called three way piece, constituting what may be termed a suction-box, which is mounted upon the stripper-carriage. It is hollow and to it is attached one end of the suction-pipe 14:, Fig.1. The said threeway piece or'suction-box is attached to the two nozzles, 11 and 12, also, such nozzles communicating with the interior space thereof. The nozzle 11 extends rearwardly from the three-way'piece toward the cylinder, its induct-end or mouth being entered into a "slot 81 in door 8,, the said slot extending horizontally lengthwise of, the cylinder, so that the said'end or mouth of the cylindernozzle works close to the face of the cardclothing of the cylinder. The dofler-nozzle 12 extends downward from the three-way piecealongside a fixed bar 15, Fig. 1, extending lengthwiseof the dofler, above the latter, the induct-end or mouth of such nozzle working close to the face of the cardclothing of the doifer. This construction constitutes a combination nozzle device which is adapted to strip both the cylinder and the dofl'er at the'same time.

I Traverse tube 9 is mounted in parallelism with the surfaces of the card-clothing of the main cylinder 1 and doffer 2, respectively, andconsequently as the nozzle-carriage 10 travels across the width of the carding engine, the mouths of the two nozzles 11 and 12 move in paths which are parallel with the said surfaces,

The suction-pipe 14 is connected with the three-way piece 13 by means of an L-shaped fitting or couplingmember 20, Fig. 1, which is attached to the suction-pipe. The threeway piece is formed at its top with an outlet opening 21, Fig. 3, around which is a depressed seat 22 that receivesthe free end of said couplingunember. 'The said end is held within the said seat by means of a screw 23 screwing into a threaded hole in the top of the three-way piece and engaging by its outwardly extending flanged head over an annular shoulder 2%, Fig. 1, on the exterior of such end.

For the connection of the cylinder-nozzle with the three-way piece, the latter is turnished in conjunction with one of its inlet- .passages with a tubular socket, 24:, within which the butt-end otsaid nozzle :fits. The said socket is .slitt-ed longitudinally at 25, at its free end and for adistance therefrom, and thereby is rendered expansible and contracti ble. It is furnished with means for contracting it upon the inserted end of the cylinder-nozzle, such means comprising in this instance a screw 26 working in lugs 27, .27, with which the socket is furnished at opposite sides of the slit 25. The cylindernozzle may be adjusted lengthwise with relationto socket .24, to vary the closeness ofap- ,proach of its induct or mouth to the surface v of the card-clothing of the cylinder 1.

For the connection of the doffer-nozzle with the three-way piece, the latter is formed .at the outer end of one of its inletpassages with a flat face against which a fiat face of the butt-end of the dofl'er-nozzle is fitted, laterally-projcot-ing lugs .271, 271, being provided upon the three-way piece and the said butt-end, respectively, which lugs are engaged by screws 28, 28, serving to bind the dofiier-nozzle to the three-way piece with the contacting faces of both thereof pressed firmly together.

. In the present instance, for the purpose of carrying the invention into effect, the socket 1% is vformed in a piece separate from the three-way piece, and connected with a rearward extension of the latter by means of a vertical pivot 29. This hinging oi the socket to the three-Way piece by such pivot enables the cylindernozzle to be swung laterally from its working position in Fig. 1 to a position parallel with or substantially so, and close to the traverse-tube 9, substantially at rigl1t-angles with the said working position. This provides for withdrawing thefree end of the cylinder-nozzle from slot 31 in door 3, as for example in order to en able said cover to be moved into an open position or removed. It provides also for loeating the cylinder-nozzle in an idle position, out of the way, when the stripperattachment is not in use, as for instance while the cylinder card-clothing is being ground.

' For the purpose of retaining the cylindernozzle in its working position when required, keeper-devices are provided. Such devices include in this-instance a screw 30, Figs. and 4, having one end thereof located I between upper and lower lugs 31, 31, on the three-way piece, the said screw being pivoted to the three-way piece by means ot'a pin 32. The socketQi is provided 'with'a pair of lugs 33 between which the screw is adapted to enter as it is swung around into the position occupied by it in 3. A washer '34 and thumb nut 35 are mounted upon the threaded portion of the screw. By tightening up the wing-nut to press the washer against the backs oi the lugs 33 the socket may be locked in place with the cylinder-nozzle ey tending from the three-way piece inworking position, with its mouth-portion within slot 31 in door Upon backing-0E the wingnut, the clamping screw 30 may be swung around so as to carry the washer and wing. nut outward free of the lugs 33, thereby unfastening the socket so as to leave the latter and the cylinder-nozzle free to be swung around laterally.

What is claimed as the invention is i 1. A vacuum stripper attachment for carding engines, comprising, in combination, a traversing carriage, a suction-nozzle, -and means for .mounting said suction-nozzle in connection with the carriage with capacity to assume a working position extending from the carriage to the cylinder to bestripped, and also to be swung laterally from thesaid working position to a position parallel with the cylinder-axis, or substantially so, and substantially at right-angles with the working position. r

2. A .vacuum stripper attachment for carding engines, comprising, in combination, a traversing carriage, a suction-box in com nection with saidcarriage, and a .suctionnozzle connected with said sucti'on box, having a pivotal mounting enabling the said nozzle to occupy a working position with the mouth of the nozzle in proximity to the face of the card-clothing of the cylinder which is to be stripped, and also to be swung laterally from the said working position to a position parallel with the cylinder-axis, or substantially so, and substantially at right; angles with the working position. I

3. The combination with a cylinder of a carding engine, and a'casing-member having a slot extending lengthwise of the said cylinder, of a traversing stripper-carriage,

a suction-nozzle, and means for inounting said suction-nozzle in connection with the carriage with capacity to assume a working position with its-mouth-end occupying said slot and the mouth close to the surface of the card-clothing, and also with capacity to be swung laterally from the said working position into an idle. position extending transversely of'the carding engine and withdrawn from the slot.

45. A vacuum stripper attachment for carding engines, comprising, in combination, a traversing carriage, a suction-box in connection with said carriage, a suction-nozzle extending downward from said carriage i'n-' to position to strip a card-clothed surface carding engines, comprising, in combination, below the carriage, a suction-nozzle extenda suction-box, a socket hinged thereto, a

ing rearward from the carriage into position suction-nozzle held in said socket, paired 15 to strip a card-clothed surface atthe rear lugs on the suction-box and socket, respec- 5 of the carriage, and means for mounting tively, ascrew-threaded keeper-stein mountthe second suction-nozzle in connection with ed pivotally between the lugs of one pair the carriage with capacity to be shifted in and adapted to swing into place between the a substantially horizontal direction relative lugs of the other pair, and a keeper-nut on 20 to the carriage and independently of ,the said keeper-stem adapted to engage'with the 10 downwardly-extending nozzle into a relatter pair of lugs to hold the socket with tracted idle position. the nozzle in working position.

5. A vacuum stripper attachment for PINK E. GREENHILL. 

